Question 1199393
Solve what?  The given information is not clear.  No question to answer was presented.  


Is the given information expected to be like this?
<pre>
COUNTRY      TRACTORS(as millions)         CITITZENS(as what? millions?)
U. S.           4.6                             ?
Germany          1                             38
Brazil           1                            201
</pre>

Your given data is not adequate.


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I saw your added note.  Still inadequate information.  PUT THE DATA HERE!  Just how do you expect to arrange those additional ratio data?